The life expectancy of hearing aids is 3 years depending on usage and care of them
For the ear tips we would suggest replacing them every 12 months minimum (every 6 months is preferrable).
For the battery we would suggest replacing it after 60 hours of wearing. (Every 4 - 5 days if wearing all day).
How To wear your Invisihear T CIC Hearing Aids?
1. Installing Battery
The correct battery type should be selected (Size 10). Lift the battery door gently using the raised catch, use the brush's magnet to hold the battery by the positive (flat side) and then insert the battery. You should avoid touching the top of the battery if possible. Gently insert the battery into the ring of the battery door. Slide the brush away from the battery toward the back of the battery door to separate the battery from the brush. Close the battery door gently after new battery is installed. Do not close the battery door with force as it may cause damage. If you cannot close the battery door, please check if the battery is installed correctly, with the positive side up and negative side (ring side) down in the ring of the tray. The symbol "+" sign on the battery should be at the same side as the "+" on the battery door.
2. Replacing Eartip/Dome
Assembly: Select the appropriate size of eartip/dome to fit comfortably into your ear; hold the eartip and place it over the connector rim correctly and gently push
To ensure the eartip is correctly assembled, please check the sleeve of the eartip is fully over the connector and does not come off when slightly pulling it.
Tips: It is recommended you choose the medium size ear dome when first fitting. If the ear dome is too small it will cause feedback making the hearing aid whistle when you wear it in the ear canal and could also work loose from the ear. Please choose the larger size ear dome should this happen. If on initial fit the aid feels too tight then opt for the smaller dome.
We suggest that you turn put hearing aid volume down before you insert it into the ear canal, this will avoid the hearing aid whistling.
3. Power On/Off
The battery door also functions as the on/off switch;
ON: The battery door is fully closed..
OFF: The battery door is open.
If you turn the hearing aid off, please wait at least three seconds before turning it on again
4. How To Place the CIC Hearing Aid in the Ear?
Turn on the hearing aids before placing them in the ear.
Hold your hearing aids with your thumb and forefinger on the outer edges of the case or the pull wire on the device faceplate.
Gently insert the canal tip of the instrument into your ear canal until you feel resistance.
Use tip of your forefinger to softly move the hearing aid forward or backward to place the device in an appropriate position so as to fit it in the ear canal.
To help position the hearing aids properly you can pull the outer ear backwards and upwards with the other hand.
5. Invisihear T Series Volume Control (T23)
The clockwise rotation gradually increases the sound and the anti-clockwise gradually decreases it.
6. Invisihear T Series Button Control (T25 & T27)
● The application method of button with the ordinary program switch: By pressing the program switch, program can be switched circularly among different programs. Every press is for one program switch. When the battery door is closed and the power is on, the hearing aid will automatically go to “Program 1”.
For those which have the program memory feature, hearing aids can return to the same program when turned back on.
● The application method of button with three in all function:
Short press（1 second)：Cycle to change the volume: the volume drops 3dB by every press the button. When it is dropped to the lowest volume, press the button again, the volume will reach the maximum value of the setting range.
Long press（2 seconds）：Cycle to switch program: Press and hold for 2 seconds to hear different program mode.
If hearing aids have program memory and continuously works for 10 minutes or more, then it is turned off. It will return to the same setting when turned back on.
Extra-long press (5 seconds）：Press the program button for 5 seconds to enter the sleep mode, and the hearing aid saves power in standby mode；Press the program button again for 5 seconds to release the sleep mode and wake up the hearing aid to working status.
7. How To Remove T25 Hearing Aids?
Grasp the device with your thumb and forefinger; gently rotate it as you pull outward.
For devices with a pull wire: Grasp the pull wire and gently slide the hearing aids backwards out of ear.
Never use the battery door to pull the hearing aid out! Damage may occur as it is not designed to withstand the pressure of pulling.
How To Maintain your T25 CIC Hearing Aid?
When using the hearing aids, earwax may accumulate in the ear canal and around the hearing aids. Large accumulations of earwax may affect the sound quality of hearing aids, so it is important to clean the hearing aids regularly. If you feel you have a blockage of wax in the ear canal please seek professional, medical advice regarding it's removal.
●Clean and wipe your hearing aid with a dry soft cloth on a daily basis..
●Use the brush to clear the earwax in the sound outlet of the hearing aid.
When cleaning the aid it is advised to do it over a sof and securet surface (i.e.: place a soft cloth or towel on a table or tray) to avoid the hearing aid being damaged if accidentally dropped.
Never use any liquids to clean the hearing aid since it may lead to permanent damage of the circuitry.